Take off the board (5)
I believe the answer is:
erase
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">take off the board</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for erase that I've seen before include "Destroy recording on audio or video tape" , "Scratch" , "Efface" , "Delete" , "Put out of mind" .)